Unity 3D 4.2.0f4 how to remove tabs in project tab, ...

ok i've just reformat my PC and I forgot

how did I manage to remove favorites in project tab

and I found a new feature project tab has new tab (2) and I'd like to get rid of it consumes too much space

now what I would like is (2) tab to be inside project tab with folders.

So it would consume 1/2 of now's space.

but they need to be combined I don't want to end up with only folders OR with only files and sub folders that I wouldn't be able to get back out.

thanks for your time.